I don't know if the extractor will work, it would have to be long enough to reach and at that small diameter (@3/8"), I might break the extrator. I will try it. Okay, if that doesn't work, to get the head off, will I need to remove the entire engine, or is there enough clearance under the backbone to take the heads off while the engine is still in the bike? Thanks for all of your input, This is by far the BEST forum. You guys are great.